Massage vibrator



- N. E. NORSTRCM MASSAGE VIBRATOR Filed June 22, 1922 2 Sheets-Sheet 1 jwf/Z Zoff /V/S /VORSTROM Feb. 21, 1928. 1,659,698

N. E. NoRsTRoM MASSAGE VIBRATOR Filed June 22, 1922 2 sheets-sneer 2 Pater-ated eb. 21, 1928.

ilTEh-lll NLS'E.NORSTRO1V, OF CECGO, ILLI'IOS, ASSGNGR TO N.

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ilRSTROM ELECTRIC Messi-.en visitaron..

Application led June 22, 1922.

My invention relates to niassage vibrators,'and has for its object improvements in such devices.

ln the accompanying drawings- Fig. 1 is an elevation;

Fig. 2 is a siinilar elevation with the eX- terior parts in section,

Fig. 3 is an elevation ot the interior parts in a direction opposite to that shown in Fig. 2;

Fig. l is a section on line 1 -l ot Fig. 2; A Fig. 5 is a section on line 5 5 ot Fig. 2; and

` Fig. 6 is a sectionr on line 6-G ot Fig. 2.

On the base 10 is a handle 11, and thru these extends al cord 12 inade up ot electric conductors 13 and lei which extend to a winding 1.5 on a U-shaped core 16. The core 16 is supported on the upper tace oi the base 10 by posts 17 and bolts 18. Secured to the core 16 is a bail 19, and screwed into this is a supporting hook 2O provided with a collar or washer 21. rlhe base 10 is provided with a flange 22, and resting on the base inside ot this flange is the casing 23. This casing is held in place by the collar 21 on hook 20.

The inagnetic core 1G is n'iade un ot laininee,r as shown in Fig. 2, and these laininae are secured together by the bolts 18 which secure said core to the posts 17. The arinature 2&1 is also made ot' laininze, each one ot which has a notch near one end tor the reception of a rod or bolt 25.

Secured to two of the posts 17 by screws 26 are plates 27, best seen in Figs. 5 and G. These plates are shaped as shown in Fig. 5, and have therein a cut 28 so as to leave an overlianging spring 29, which spring is in fact a laminated spring.

A U-shaped spring 30 (Figs. 2, 3 andV 6) has one leg 31 between the plate 27, and the posts 17 and is held in place by the screws 26. The other leg 32 ot the spring 30 extends to the other side oiu the inagnet. The rod has one end secured to the spring 29 and the other end secured to the leg 32. rlliese parts are' so arranged that the rod 25 is normally inclined as shown in Figs. 2, 3 and il. lVhen rod 25 moves troni inclined to horizontal position it deiiects sprino 29.

Between the spring and the armature 24 is a. rubber cushion This cushion is preferably inade ot a piece or" rubber tub- Serial No. 57Q,10B.

ing which is split open on one side and spread out so that it takes the shape shown in Fig. L1. This cushion, which is under considerable initial compression, presses the rear ends oi the laininee ot the arinature against one pole ot the core 16. At the other end this cushion forces the laininae oi the armature against the rod 25. As this rod is normally in an inclined position, the arinature as a whole has one corner only removed troin the poles ot' the core. As the rod passes thru notches in the edges of the lainin, it Serves to locate the arniature with respect to the core. On the rod 25, between the leg ot spring 30 and the nearest lainina, is a spring Si which serves to push the laininee of the armature toward the posts 17 on the other side.

F roin the foregoing it will be seen that the armature is composed of laininee which are not hinged in the ordinary meaning of that terni, but are held in place by other devices. @ne ot these is the cushion 33 which keeps one end ot' each lainina always in contact with one pole ot the core by an upward push. The second ot these other devices is the rod 25 which, by engaging notches in the laininze, locates laterally in one direction with respect to the core. rEhe third is the spring 3e'. which presses the lamina)I toward posts 17 and thus serves'to locate the armature in the other lateral direction. In this condition the laininae are clamped between rod 25 and cushion 33, and are guided by posts 17.

Located at about the center et the base 10 is a bridge 35, and mounted upon this bridge is a spring 36, which is below and parallel with the spring 30. ill-1t one end there is a piece ot i'elt or other sott body 37 between prings 30 and 38. (Fig. 2). it the other end there is a thuinb screw 3S which passes thru base 10 and spring 3G and is provided with a nut over the spring. These parts are so arranged that when screw 3S is turned, the spring 36 beconies a lever inount'- ed upon bridge as a tulcruni.

The spring 30 is iixed at the leg 31, the leg 32 being the tree end ot the spring. This spring is so stili;1 that the magnetic torce t the inagnet is not sufficientto attract the armature against the retractnig force of the spring. But byturning screw 38 so as to :torce spring 36 against spring SO, the retractive torce beconies the dr er 

